Effects of Unsaturated Fatty Acids on the Reproductive Performances of White Indian Prawn ( Rindicus )

The shrimp farming success in the future will greatly denpend upon increasing supplies of healthy and high quality seed for stocking ponds. The limited and inconsistent availability of wild Shrimp postlarvae together with an urgent need of establishing selective breeding programs, increased the interest in captive broods of penaeid. Many investigations have been carried -out A on several shrimp species world-wide. This study have been conducted on 2 shrimp groups since September (Mehr) to July (Tir) 1999 in Bandar-e-lmam southwest Iran. The wild group (SPB) prepared from Jask area and the pond group (POB) prepared from artificial ponds upon harvesting them as marketable. size have been investigated. 2 groups were exposed to natural diets consisting of squid and artemia biomass in same conditions using 12 m concrete tanks. Stocking density was 2 piece/m2 (IF: IM). Half part of the pond bottom covered by fine sand to reduce the stress where the other part has been used for feeding. Daily ration given in 3 times by satiation method. Also reproductive performance of wild gravid brooders (WLB) were recorded as a control group 2 examined groups well grown and around 50% of the SPM and around 30% of POB females successfully ripened an produced eggs an nauplii where almost all males of both groups were matured. Data showed fecundity is highly correlated to the TL and W of the brooders by positive trend. Considering the T WI Fecundity and nauplii production the WLB brooders are significantly. (P=0.05) higher than 2 other groups, while the SPM broods are significantly (P=0.05) higher in hatchability. Meanwhile the survival rate from nauplii to postlarvae stage was around 30% for SNIP brooders. On the other hand the growth parameters (TL W) of the marketable size of the shrimps produced for SMP brooders were significantly (P=0.05) higher than those produced from WLB group. Since the fecundity is improvable by increasing the brood size thus the data suggest the superiority of the SPM brooders.

Bibliographic Details

Main Authors:	Ghofleh Marammazi, Jasem, Mazraeh, S., Refaei, B., Najafabadi, M., Rajabi, N.
Format:	Report biblioteca
Language:	Persian
Published:	Iranian Fisheries Science Research Institute 2002
Subjects:	Shrimp, Postlarvae, Females, Males, Growth parameters, Fecundity,
Online Access:	http://hdl.handle.net/1834/14256
Tags:	Add Tag No Tags, Be the first to tag this record!